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Official Series Description -APISHAPA Series <br />LOCATION APISHAPA CO+NM <br />Established Series <br />Rev. GB/LLC <br />12/1999 <br />APISHAPA SERIES <br />Page 1 of 2 <br />The Apishapa series consists of very deep, somewhat poorly drained and poorly drained, slowly permeable soils that <br />formed in alluvial parent materials derived from mixed rock sources. Apishapa soils aze on flood plains or in slightly <br />depressed areas on plains and terraces and have slopes of 0 to 4 percent. The mean annual precipitation is about I 1 inches <br />and the mean annual temperature is about 54 degrees F. <br />TAXONOMIC CLASS: Fine, smectitic, calcareous, mesic Vertic Fluvaquents <br />TYPICAL PEDON: Apishapa clay loam, rangeland. (Colors are for dry soil unless otherwise noted). <br />A--O to 8 inches; light brownish gray (1 OYR 6/3) clay loam, dark grayish brown (1 OYR 4/2) moist; moderate fine <br />subangular blocky structure parting to fine granular; slightly hard, friable, sticky and slightly plastic; cracks up to 1/2 inch <br />wide; calcazeous; moderately alkaline; cleaz smooth boundary. (6 to 10 inches thick) <br />AC--8 to 14 inches; grayish brown (2.SY 5/2) silty clay, dark grayish brown (2.SY 4/2) moist; very weak coarse prismatic <br />structure parting to weak medium angular blocky structure; extremely hard, very sticky and very plastic; cracks up to 1/2 <br />inch wide; few slickensides on the faces of peds; calcareous; moderately alkaline; gradual smooth boundary. (3 to 16 <br />inches thick) <br />Ckzgl--14 to 50 inches; grayish brown (2.SY 5/2) clay, dark grayish brown (2.SY 4/2) moist; common medium prominent <br />(2.SY 5/6 and 25Y 4/1) mottles; massive; extremely hard, very sticky and very plastic; few cracks in upper part; visible <br />secondary calcium carbonate and calcium sulfate occurring as concretions, crystals, and in thin seams and streaks; <br />calcareous; strongly alkaline; gradual smooth boundary. (20 to 40 inches thick) <br />Ckzg2--50 to 60 inches; olive gray (SY 5/2) clay, olive gray (SY 4/2) moist; massive; extremely hard, very plastic; <br />secondary calcium carbonate and calcium sulfate, and probably other salts; calcareous; strongly alkaline. (Several feet <br />(thick) <br />TYPE LOCATION: Prowers County, Colorado; approximately 360 feet south 2,315 feet east of the NW corner of sec. <br />29, T. 22 S., R. 25 W. <br />RANGE IN CHARACTERISTICS: There aze many distinct and prominent mottles of bright and dull chroma usually <br />within an 18 inch depth. The particle size control section is slightly alkaline to strongly alkaline. Calcium carbonate <br />equivalent is usually 2 to 5 percent in most of the control section, but increases to 10 or 12 percent in some horizons.- <br />Calcium sulfate is usually about 2 percent in the lower part of the control section but ranges from 0 to 5 percent. The <br />average annual soil temperature is 51 to 57 degrees F., the average summer soil temperature ranges from 66 to 76 degree <br />F. The control section is usually clay but ranges from 35 to 60 percent clay, 10 to 50 percent silt, and 10 to 25 percent <br />sand. Fluctuating water tables occur in these soils in some season of some years. <br />The A horizon has hue of l OYR through SY, value of 5 through 7 dry, 3 through 5 moist, and chroma of 1 through 3. <br />C horizon has hue of SY through l OYR. <br />[NG SERIES: This is the Abbott series. Abbott soils have more than 5 percent calcium carbonate equivalent <br />and lack gypsum crystals. <br />11 /02/2006 <br />.nres.usda.gov/osd/dat/A/API SHAPA.html <br />